Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....workbook Workbook workbook = new Workbook ( FileName ); //0-byte...array byte [] workbookData = new byte [ 0 ]; //Text save options...